This research was conducted to study rubber seed meal (Hevea brasiliensis) as a candidate of plant protein source for common carp fry (Cyprinus carpio Linn) diet. Processed rubber seed meal (pRSM) and unprocessed (upRSM) were subjected to feed consumption. Completely randomized design with 4 treatments and 3 replicates were used in this experiment. Diet P1 did not contain protein from pRSM. Diet P2 and P3 contained 50 and 75% protein from pRSM. Diet P4 contained 50% protein from upRSM. Common carp fry measuring 2.19 +- 0.005 g was entered to 18 aquariums, 20 fish/aquarium and the feed testing diet at satiation lasted for 40 days of culture period. Diet P1 showed the highest feed intake, which was 165.43 g and diet P4 showed the lowest feed intake, which was 131.93 g. The result showed that common carp fry relatively digested pRSM better than upRSM. It is concluded that pRSM can be used as protein source up to 50% in common carp fry diet.